19656740

素因数分解:

$2^2\times 5^1\times {\mathrm{683}}^1\times {\mathrm{1439}}^1$

素因数の和:2131

約数の個数: 24

約数和(自身を含む): 41368320

約数和(自身を除く): 21711580

約数列:

[1, 2, 4, 5, 10, 20, 683, 1366, 1439, 2732, 2878, 3415, 5756, 6830, 7195, 13660, 14390, 28780, 982837, 1965674, 3931348, 4914185, 9828370, 19656740]

約数ペア:

[(1, 19656740), (2, 9828370), (4, 4914185), (5, 3931348), (10, 1965674), (20, 982837), (683, 28780), (1366, 14390), (1439, 13660), (2732, 7195), (2878, 6830), (3415, 5756)]